There was a celica st185 at the brecons run with DS3000 on and it's was squeaking the whole time. Was funny at first but I think after while I would get sick if it
Get so me grooved discs like the ones mtech sell. They're fairly noises when braking hard .
personally I actually don't mind the noise, you know, because racecar. I know a guy who fitted fully floating discs to his f430 and they rattled like f*ck, he loved it because everyone else thought it was broken, but in reality it was a complete animal (he races a Lambo now in Britcar)
Dump valves are a childish novelty, squealing brakes just sound like the cars a banger to 99.9% of people who don't know it denotes a hard track pad is installed...? I really don't get it.